CN101763185B - Virtual input system and method thereof - Google Patents
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- CN101763185B CN101763185B CN200810187802.2A CN200810187802A CN101763185B CN 101763185 B CN101763185 B CN 101763185B CN 200810187802 A CN200810187802 A CN 200810187802A CN 101763185 B CN101763185 B CN 101763185B
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Abstract
The invention relates to a virtual input system and a method thereof. The virtual input system comprises a track generating device and a receiving device. The receiving device comprises a sensing module, a coding module, a data bank and a comparing module. The sensing module is used for sensing track information of the track generating device. The coding module is used for coding the track information into a specific code series according to a coding rule. The data bank memorizes a plurality of reference code series and a plurality of reference characters corresponding to the reference code series. The comparing module confirms at least one candidate character from the reference characters according to the specific code series and the reference characters series.
Description
Technical field
The present invention relates to a kind of character input system and method, and especially, the present invention relates to a kind of virtual input system and method.
Background technology
In recent years, along with Mobile Communications science and technology constantly develops, therefore, mobile phone has become one of tool of communications that modern is indispensable.When user will utilize mobile phone transmit news in brief or record calendar, just must input many words to mobile phone.In order to allow user can input Chinese word to mobile phone, the mode of various types of word inputs produces thereupon.
Among the character input method of numerous kinds, the most traditional character input modes is button input method.For example, when user's wish is inputted certain Chinese word by the method in mobile phone, must first know the corresponding code of this Chinese word (for example corresponding phonetic symbol of this Chinese word) and sequentially press each button corresponding to these codes.When the button of pressing according to user when mobile phone screen demonstrates a plurality of type options, user also will select its word of wanting again to complete the program of word input in these type options.The shortcoming of the method maximum is that the efficiency of its input is quite low, for user, must spend very many time and the spiritual action of carrying out word input.
Except above-mentioned button input method, current many mobile phones are also supported handwritten input method simultaneously, and user can carry out by writing pencil handwriting input on mobile phone screen.Yet this kind of handwritten input method still exists many shortcomings, for example independently the inconvenient user of writing pencil carries; The identification of handwriting is still low; The limited size of mobile phone screen frame etc.Therefore,, for user, handwritten input method is still convenient not.
On the other hand, current some mobile phone is on the market the function of support voice input also, when user has opened after the sound controlled dialing function of mobile phone, user is as long as directly say telephone number or the contact name of wanting to dial, the action that mobile phone can dial automatically facing to mobile phone.Yet the discrimination power of phonetic entry is at present still low, and be easily subject to the noise jamming of context, if the volume that user speaks is too small, the speed nonstandard or that speak of pronouncing is too fast, all can cause the situation of correctly identification to occur.
Therefore, the invention provides a kind of virtual input system and method, to address the above problem.
Summary of the invention
The object of the present invention is to provide a kind of virtual input system and method.This virtual input system is converted to word by the mode of coding by the formed motion track of user's motion track generation device, uses to allow the user can be more easily and carry out easily the work of word input.
The first specific embodiment according to the present invention is a kind of virtual input system.In this embodiment, this virtual input system comprises trajectory generation device and receiving trap.This receiving trap comprises sensing module, coding module, data bank and comparison module.The module of wherein encoding system is coupled to sensing module; Comparison module is coupled to coding module and data bank.
In this embodiment, sensing module is the trace information about trajectory generation device in order to sensing, formed at least one motion track when this trace information can comprise user's motion track generation device.Coding module is encoded at least one particular code to form particular code tandem according to coding rule by least one motion track in trace information.Data bank stores a plurality of identifying code tandems and corresponding to a plurality of reference symbols of the plurality of identifying code tandem.Comparison module is determined at least one candidate symbol according to particular code tandem and a plurality of identifying code tandem from a plurality of reference symbols.In actual applications, reference symbol can be the various forms such as word, figure or multiword, and is not only confined to word.
The second specific embodiment according to the present invention is a kind of virtual input method.In this embodiment, first, this virtual input method produces trace information.Formed at least one motion track when in fact, trace information can comprise user's motion track generation device.Then, this virtual input method is encoded at least one particular code to form particular code tandem according to coding rule by least one motion track in trace information.Afterwards, this virtual input method is determined at least one candidate symbol according to particular code tandem and a plurality of identifying code tandem from a plurality of reference symbols.Wherein the plurality of reference symbol is corresponding to the plurality of identifying code tandem.In actual applications, reference symbol can be the various forms such as word, figure or numeral.
Than previous technology, according to virtual input system of the present invention and method, can provide user a kind of brand-new human-computer interaction pattern.When user's wish is inputted a certain word, user only needs motion track generation device aloft to carry out writing words, virtual input system can sensing user the motion track of motion track generation device aloft, and determine the candidate character similar to motion track according to motion track, for user, select correct word.
Therefore, this virtual input system can be applicable in general portable electronic equipment, the character input modes of hommization so that a kind of convenience of user to be provided, and can solve the variety of problems that traditional character input modes may suffer from.
Can be by following detailed Description Of The Invention and appended graphic being further understood about the advantages and spirit of the present invention.
Accompanying drawing explanation
Fig. 1 shows according to the functional block diagram of the virtual input system of the first specific embodiment of the present invention.
Fig. 2 shows the detailed functions calcspar of the sensing module shown in Fig. 1.
Fig. 3 (A) shows that virtual input system is for the defined four direction vector of Chinese word.
Fig. 3 (B) is shown in the corresponding relation between stroke and code in coding rule.
It is the example of code tandem by literal code that Fig. 3 (C) shows.
Fig. 3 (D) shows the example of the practical operation picture of virtual input system.
Fig. 4 shows according to the process flow diagram of the virtual input method of the second specific embodiment of the present invention.
Fig. 5 shows the detail flowchart of the S12 of step shown in Fig. 4.
Fig. 6 shows the detail flowchart of the S14 of step shown in Fig. 4.
Fig. 7 shows according to the functional block diagram of the virtual input system of the 3rd specific embodiment of the present invention.
Fig. 8 shows the detailed functions calcspar of the sensing module shown in Fig. 7.
Embodiment
The invention provides a kind of virtual input system and method.This virtual input system can the mode by coding be encoded to the symbol of input by the motion track of user's motion track generation device, to allow the user needn't button or write on handwriting pad, and can be simple and easy and carry out easily the work of symbol input.It should be noted that symbol described in the invention can be the various forms such as word, numeral or figure, all can input by virtual input system of the present invention and method, and not only be confined to word.
According to a kind of virtual input system of the first specific embodiment of the present invention.Please refer to Fig. 1, Fig. 1 shows the functional block diagram of this virtual input system.As shown in Figure 1, virtual input system 1 comprises trajectory generation device 10 and receiving trap 12.In this embodiment, receiving trap 12 comprises sensing module 120, coding module 122, data bank 124, comparison module 126 and selects module 130.The module 122 of wherein encoding is coupled to sensing module 120; Comparison module 126 is coupled to coding module 122 and data bank 124; Select module 130 to be coupled to comparison module 126.Next, each module and the function thereof that for virtual input system 1, comprise are respectively described in detail.
In actual applications, trajectory generation device 10 can comprise inductive module 102; Receiving trap 12 can comprise emitting mould train 128.Emitting mould train 128 is in order to send infra-red signal to the external world; 102 infra-red signals that send in order to induced emission module 128 of inductive module also send response signal.Therefore, in virtual input system 1, between trajectory generation device 10 and receiving trap 12, can carry out by infrared ray the transmission and interaction of signal, but not as limit.
In virtual input system 1, the main function of trajectory generation device 10 is to provide user to write word or the figure of its wish input by motion track generation device 10 aloft.In this embodiment, the operator scheme that user inputs by trajectory generation device 10 can be divided into following two kinds.
The first operator scheme is continuous input pattern, that is start before the first stroke by a certain word of trajectory generation device 10 input as user, need be first by the function key of a trajectory generation device 10, to inform that receiving trap 12 users prepare to start to carry out the input of this word; When user has inputted last stroke of this word, also need again by a function key, to inform that receiving trap 12 users have completed the input of this word.
The second pattern is segmentation input pattern, that is except start to input whole word and complete input during whole word, when each stroke of user's input characters, no matter before starting to input stroke or complete after input stroke, all need by the function key of a trajectory generation device 10, to inform that receiving trap 12 users have completed the input of this stroke.
Then, each module with regard to receiving trap 12 is inquired into.When user is aloft during motion track generation device 10, the sensing module 120 of receiving trap 12 will sense the trace information about trajectory generation device.Formed at least one motion track when in fact, trace information can comprise trajectory generation device 10 and moves.
Method as for the motion track of sensing module 120 sensing track generation devices 10, except seeing through the mode of ultrared sensing trajectory generation device 10, also can obtain the motion track of trajectory generation device 10 by extracting the mode of the image of trajectory generation device 10, but in these two kinds of modes, not be limited.
In this embodiment, the trace information sensing for fear of sensing module 120, due to factors such as vibrations and noises, causes the difficulty in follow-up judgement, and therefore, sensing module 120 will carry out to trace information the program of some pre-treatments.Please refer to Fig. 2, Fig. 2 shows the detailed functions calcspar of the sensing module 120 shown in Fig. 1.As shown in Figure 2, sensing module 120 comprises noise elimination unit 1202, unit 1204 and track correct unit 1206 are eliminated in vibrations.Next, putting up with the function that these three unit possess is introduced.
First, noise is eliminated some noises that unit 1202 may comprise in order to eliminate trace information.In fact, these noises may be some too small displacement informations, because these too small displacement informations do not have enough displacements, therefore virtual input system 1 does not need these too small displacement informations, even also rocking of these small-sized parts can be caused puzzlement for follow-up analysis.Therefore, virtual input system 1 is eliminated unit 1202 by noise and is eliminated these too small displacement informations, so long as displacement does not surpass the displacement information of preset value, all can be eliminated unit 1202 by noise and is considered as the noise that hand shake caused and eliminates.
Secondly, the vibrations that cause when unit 1204 operates due to user in trace information in order to eliminate are eliminated in vibrations.When as user, aloft motion track generation device 10 carries out writing words, conventionally can not have no destination touches everywhere, therefore it is mainly to predict the direction of user's motion track generation device according to some previous information that the operation principles of unit 1204 is eliminated in vibrations, when if the trace information that sensing module 120 detects and prediction are not inconsistent, unit 1204 is eliminated in vibrations will carry out appropriate correction to trace information, so that revised trace information can conform to prediction.In this embodiment, vibrations are eliminated unit 1204 according to the trace information that calculates the concept overcorrect skew of least fibre method (leastmean square).
As for 1206 of track correct unit, be that the prediction moving direction that unit 1204 calculates is eliminated in continuity vibrations, and the trace information detecting is projected on the direction vector of prediction moving direction, when the trace information detecting departs from prediction locus information, track correct unit 1206 is according to this trace information of prediction locus Information revision.
After the above-mentioned signal handling procedure carrying out through sensing module 120, sensing module 120 can be sent to coding module 122 by processing trace information later.When coding module 122 receives after trace information, coding module 122 will be encoded into particular code tandem by trace information according to coding rule.In this embodiment, coding rule is all encoded to its corresponding particular code and produces the particular code tandem corresponding to this trace information according to the particular code after all codings in order to each motion track that this trace information is comprised.Next, will according to coding rule, trace information be encoded into the program of particular code tandem by following example explanation coding module 122.
Please refer to Fig. 3 (A), the shown circular diagram of Fig. 3 (A) has illustrated in coding rule, is how for the stroke of all words, to classify with the code corresponding to different.As shown in Fig. 3 (A), with regard to Chinese word, virtual input system 1 has defined four direction vector, and each direction vector corresponds respectively to code 1～4, and this four direction vector is divided into four regions by the regions of originally whole circular 360 degree.
In actual applications, because the custom in the stroke orientation of everyone writing words is different, therefore, in virtual input system 1, the definition of these direction vectors can be adjusted according to user's hobby or custom, to be user-friendly for the input of word.
When the hand-held trajectory generation device 10 of user is during in a certain stroke of sky-writing, motion track when the sensing module 120 of receiving trap 12 will sensing user be write this stroke, and by this motion track between two the adjacent corresponding vector projection of point to above-mentioned four direction vector, make this four direction vector obtain new weighted value.Along with the information of motion track is inputted constantly, when wherein the accumulation weighted value of certain direction vector surpasses preset critical, the motion track of this stroke represents that the motion track of this stroke has had the feature of this direction vector, therefore will be encoded as the code corresponding to this direction vector.
In addition,, because the motion track of single stroke also may have the not only feature of a direction vector, now, this motion track with the multi-direction stroke to measure feature will be encoded into code 5.That is to say, in this embodiment, code 5 representatives be to comprise not only a kind of directional characteristic motion track.
Please refer to Fig. 3 (B), Fig. 3 (B) is shown in the corresponding relation between various strokes and code in coding rule.As shown in Fig. 3 (B), to suppose in coding rule, stroke " " is corresponding to code 1, stroke " | " is corresponding to code 2, stroke "/" is corresponding to code 3, stroke " " corresponding to code 4, other have multiple directional characteristic stroke (for example second) corresponding to code 5.Next, will illustrate how Chinese word is encoded into code tandem by several examples.
From Fig. 3 (C), according to above-mentioned coding rule, because word " scholar " comprises three strokes altogether, be sequentially: " one ", " | " and " one ", therefore " scholar " can be encoded as code tandem " 121 ".In like manner, word " change " can be encoded as code tandem " 3215 "; Word " sky " can be encoded as code tandem " 43535121 ".
In this embodiment, because data bank 124 stores a plurality of identifying code tandems and corresponding to a plurality of reference words of the plurality of identifying code tandem, therefore, trace information sensing module 120 being sensed when coding module 122 is encoded to after particular code tandem, comparison module 126 can be compared particular code tandem and the plurality of identifying code tandem, and according to comparison result, in the plurality of reference word, determine one or more candidate characters, for user, select.
In actual applications, comparison module 126 can be selected the one or more approximate code tandem similar to this particular code tandem according to this particular code tandem in the stored a plurality of identifying code tandems of data bank 124.Because each identifying code tandem all can be corresponding to one or more reference words, so these approximate code tandems can be corresponding to some approximate word, comparison module 126 can be determined at least one candidate character according to these approximate words.
As for these particular code tandems of comparison module 126 comparison with a plurality of identifying code tandem to find out the mode that is similar to code tandem, have quite multiple possibility.For example, comparison module 126 can be by comparing simply the most one to one mode, by this particular code tandem respectively with data bank 124 in each identifying code tandem compare.When the similarity degree of the feature of some identifying code tandems and this particular code tandem surpasses a preset value, this identifying code tandem can be regarded as the approximate code tandem of this particular code tandem, and the corresponding reference word of this approximate code tandem can be regarded as the candidate character corresponding to this trace information.
In fact, comparison module 126 can give one according to the similarity degree of the feature of each identifying code tandem and this particular code tandem and compare scoring, and select according to the height of comparison scoring the candidate character that similarity is higher, to list these candidate characters, for user, select.
On the other hand, comparison module 126 also can combine certain a part of region in particular code tandem or identifying code tandem, forms the feature of similar radicals by which characters are arranged in traditional Chinese dictionaries structure.By this mode, also can help comparison module 126 to find out more accurately similar code tandem goes forward side by side and obtains the candidate character corresponding to this trace information.
When comparison module 126 completes smoothly comparison work and obtains after the candidate character corresponding to this trace information, select module 130 in order to select the target text corresponding to trace information in these candidate characters.In actual applications, select module 130 can comprise user interface (not being shown in figure), touch control type screen for example, user can select by user interface its target text of wanting input in each candidate character, and its actual operation screen please refer to Fig. 3 (D).
As shown in Fig. 3 (D), suppose that the motion track of first three stroke that sensing module 120 user that senses inputs is respectively " one ", " | " and "/", coding module 122 can obtain particular code tandem 123 according to the motion track of first three stroke.Then, comparison module 126 can be compared particular code tandem 123 and be stored in a plurality of identifying code tandems in data bank 124, and lists front 10 candidate characters that similarity is the highest and select for user.In this example, suppose that the word of user's wish input is " woods ", therefore user will select the candidate character of No. 5.
In actual applications, comparison module 126 can be when the stroke of user importation, and the work of comparing is also listed the candidate character that similarity is higher.In addition, comparison module 126 also can complete after the loading routine of whole word user, then the work of comparing list candidate character.
In addition, user also can set by selecting module 130 according to the comparison result of comparison module 126, automatically in numerous candidate characters, selects the candidate character the highest with trace information similarity as target text.
In sum, virtual input system 1 can according to user aloft the motion track of motion track generation device 10 judge the word similar to motion track to reach the effect of input characters.In fact, virtual input system 1 has more than the application that is limited to Chinese word input, also can apply to the input of other kind words such as Japanese or English.Similarly, virtual input system 1 also, applicable to the input of various figures, multiword or symbol, is not limited described in this embodiment.
The second specific embodiment according to the present invention is a kind of virtual input method.The mode that this virtual input method sees through coding is converted to user the symbol of input in the motion track of aerial mobile trajectory generation device, with the work that user can be inputted easily.The described symbol of this embodiment can be the various forms such as word, multiword or figure.Please refer to Fig. 4, Fig. 4 shows the process flow diagram of this virtual input method.Next, each step with regard to this virtual input method is respectively introduced.
As shown in Figure 4, first, the method execution step S10, produces trace information.In fact, the method can, by the mode of sensing track generation device or virtual input system formed at least one motion track when aerial mobile itself, obtain this trace information.
Then, the method execution step S12, is encoded into particular code tandem according to coding rule by trace information.As shown in Figure 5, in this embodiment, step S12 can be subdivided into following two sub-steps S122 and S124.In sub-step S122, the method will be first determines that according to coding rule each motion track in trace information distinguishes corresponding particular code.Then, the method is carried out sub-step S124, according to determined particular code in sub-step S122, produces particular code tandem.
That is to say, when the method senses after the trace information of user's motion track generation device, the sequencing that each motion track comprising due to trace information will move according to user is arranged, therefore the method will sequentially be encoded into respectively its corresponding particular code by each motion track in trace information according to coding rule.Therefore, this trace information can be encoded into one group of particular code tandem that comprises these particular code.
When trace information has been encoded into after particular code tandem, the method will perform step S14, according to particular code tandem and a plurality of identifying code tandem, determines at least one candidate symbol.As shown in Figure 6, in this embodiment, step S14 can be subdivided into following two sub-steps S142 and S144.Sub-step S142 selects approximate code tandem in a plurality of identifying code tandems according to particular code tandem; Sub-step S144 determines candidate symbol according to the approximate corresponding approximate symbol of code tandem.
When the method executed step, S14 determines after one or more candidate symbol, and the method will perform step S16, selects aiming symbol in candidate symbol.In actual applications, can in these candidate symbol, be selected by user the aiming symbol that it wants input.
In actual applications, after the method execution of step S10, the trace information that the method will sense it carries out the program of some pre-treatments, for example, eliminate noise, vibrations and revise track supervisor.The object that the method is carried out these programs is to avoid, because the factors such as vibrations and noise cause the difficulty of trace information in follow-up judgement, also can promote the accuracy of comparison.
The 3rd specific embodiment according to the present invention is a kind of virtual input system.In fact, this virtual input system can be a portable electronic devices, electronic products such as mobile phone, PDA, handheld game device, satellite positioning and navigation device or stock handset.Please refer to Fig. 7, Fig. 7 shows the functional block diagram of this virtual input system.
As shown in Figure 7, virtual input system 2 comprises trajectory generation module 20, coding module 22, data bank 24, comparison module 26 and selects module 28.The module 22 of wherein encoding is coupled to trajectory generation module 20; Comparison module 26 is coupled to coding module 22 and data bank 24; Select module 28 to be coupled to comparison module 26.Next, each module and the function thereof that for virtual input system 2, comprise are respectively described in detail.
First, the trajectory generation module 20 of virtual input system 2 is about the trace information of virtual input system 2 own in order to sensing.Formed a plurality of discontinuous motion tracks or continuous motion track when in fact, this trace information can comprise virtual input system 2 and moves.
In this embodiment, the function of trajectory generation module 20 is to extract a plurality of environmental images in response to the movement of virtual input system 2, and obtains the trace information about virtual input system 2 according to the plurality of environmental images.
In more detail, trajectory generation module 20 can comprise camera unit 202 and arithmetic element 204, as shown in Figure 8.When user is in aerial mobile virtual input system 2 during with incoming symbol, the camera unit 202 of trajectory generation module 20 can, in the moving process of virtual input system 2, take a plurality of environmental images.Then, arithmetic element 204 will be carried out computing to obtain the trace information about virtual input system 2 according to the plurality of environmental images.
When coding module 22 receives after trace information from trajectory generation module 20, coding module 22 will be encoded into particular code tandem by trace information according to coding rule.In this embodiment, this particular code tandem comprises at least one code corresponding to this trace information.As for coding rule, comprised the corresponding relation between motion track and particular code, each motion track that module 22 comprises this trace information therefore can help to encode is all encoded to its corresponding particular code, and produces the particular code tandem corresponding to this trace information according to the particular code after all codings.
In this embodiment, because data bank 24 stores a plurality of identifying code tandems and corresponding to a plurality of reference symbols of the plurality of identifying code tandem, therefore, trace information trajectory generation module 20 being sensed when coding module 22 is encoded to after particular code tandem, comparison module 26 can be compared particular code tandem and the plurality of identifying code tandem, and according to comparison result, in the plurality of reference symbol, determine one or more candidate symbol, for user, select.
When comparison module 26 completes smoothly comparison work and obtains after the candidate symbol corresponding to this trace information, select module 28 can in these candidate symbol, select the aiming symbol corresponding to trace information.In fact, the described symbol of this embodiment can be the various forms such as word, multiword or figure.As for the detailed operation situation of relevant virtual input system 2, can, with reference to the related description of above-mentioned the first specific embodiment, not repeat them here.
Compared to prior art, virtual input system according to the present invention provides user a kind of brand-new human-computer interaction pattern.When user's wish is inputted a certain word, needn't operate any button or write on handwriting pad, only need write this word in aerial mobile trajectory generation device, virtual input system can sensing user in the motion track of aerial mobile trajectory generation device, and determine the candidate character high with motion track similarity according to motion track, for user, select correct word.Therefore, this virtual input system can be applicable in general mobile communication device, the character input modes of hommization so that a kind of convenience of user to be provided, and can solve the variety of problems that traditional character input modes may suffer from.
By the above detailed description of preferred embodiments, be that hope can be known description feature of the present invention and spirit more, and not with above-mentioned disclosed preferred embodiment, category of the present invention limited.On the contrary, its objective is that hope can contain in the category of the scope of the claims of being arranged in of various changes and tool equality institute of the present invention wish application.Therefore, the category of the scope of the claims that the present invention applies for should be done the broadest explanation according to above-mentioned explanation, to cause it to contain the arrangement of all possible change and tool equality.
Claims (14)
1. a virtual input system, comprises:
One trajectory generation device, in order to produce trace information; And
One receiving trap, comprises:
One sensing module, in order to this trace information of sensing, this sensing module comprises:
Unit is eliminated in one vibrations, the vibrations that cause in order to eliminate this trace information, and these vibrations are eliminated unit according to this trace information that calculates the concept overcorrect skew of least fibre method; And
One track correct unit, the prediction moving direction that unit calculates is eliminated in these track correct unit continuity vibrations, and the trace information detecting is projected on the direction vector of prediction moving direction, when the trace information detecting departs from prediction locus information, this this trace information of track correct unit correction;
One is coupled to the coding module of this sensing module, and this coding module is encoded into a particular code tandem according to a coding rule by this trace information;
One data bank, this data bank stores a plurality of identifying code tandems and a plurality of reference symbol, and the plurality of identifying code tandem is corresponding to the plurality of reference symbol; And
One is coupled to the comparison module of this coding module and this data bank, and this comparison module is determined at least one candidate symbol according to this particular code tandem and the plurality of identifying code tandem from the plurality of reference symbol.
2. virtual input system as claimed in claim 1, is characterized in that, further comprises:
One is coupled to the selection module of this comparison module, in order to certainly to select an aiming symbol in this at least one candidate symbol.
3. virtual input system as claimed in claim 2, is characterized in that, this selection module comprises a user interface, for a user, in this at least one candidate symbol, selects this aiming symbol.
4. virtual input system as claimed in claim 1, is characterized in that, this trace information comprises a plurality of discontinuous motion tracks.
5. virtual input system as claimed in claim 1, is characterized in that, this trace information comprises at least one continuous motion track.
6. virtual input system as claimed in claim 1, is characterized in that, this trace information moves this trajectory generation device by a user and forms.
7. virtual input system as claimed in claim 1, is characterized in that, this particular code tandem comprises at least one code corresponding to this trace information.
8. virtual input system as claimed in claim 1, is characterized in that, this sensing module comprises:
One noise is eliminated unit, and when this trace information comprises a noise, this noise is eliminated unit and eliminated this noise.
9. a virtual input system, comprises:
One trajectory generation module, in order to produce trace information, this trajectory generation module comprises:
One camera unit, this virtual input system is in aerial mobile during with incoming symbol, and the camera unit of this trajectory generation module, in the moving process of this virtual input system, is taken a plurality of environmental images; And
One arithmetic element, carries out computing to obtain this trace information about this virtual input system according to the plurality of environmental images;
One is coupled to the coding module of this trajectory generation module, and this coding module is encoded into a particular code tandem according to a coding rule by this trace information;
One data bank, this data bank stores a plurality of identifying code tandems and a plurality of reference symbol, and the plurality of identifying code tandem is corresponding to the plurality of reference symbol; And
One is coupled to the comparison module of this coding module and this data bank, and this comparison module is determined at least one candidate symbol according to this particular code tandem and the plurality of identifying code tandem in the plurality of reference symbol.
10. virtual input system as claimed in claim 9, is characterized in that, further comprises:
One is coupled to the selection module of this comparison module, in order to certainly to select an aiming symbol in this at least one candidate symbol.
11. virtual input systems as claimed in claim 9, is characterized in that, this trajectory generation module responds the movement of this virtual input system and extracts a plurality of environmental images, and produces this trace information according to the plurality of environmental images.
12. virtual input systems as claimed in claim 9, is characterized in that, this trace information comprises a plurality of discontinuous motion tracks.
13. virtual input systems as claimed in claim 9, is characterized in that, this trace information comprises at least one continuous motion track.
14. virtual input systems as claimed in claim 9, is characterized in that, this particular code tandem comprises at least one code corresponding to this trace information.
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| CN101320291A (en) * | 2008-07-11 | 2008-12-10 | 华南理工大学 | Virtual character recognition method based on visible light detection |
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| CN101763185A (en) | 2010-06-30 |
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